kimchi & kraut

Passive House + Zero Net Energy + Permaculture Yard

Tag Archives: shou sugi ban

Siding Part 2: Charred Cedar (Shou Sugi Ban)

0

Building a Passive House: Science, then Art

We wanted the process of creating our new home to be fun, so from the outset we approached the build as a mix of science experiment and art project.

For the structure, this meant utilizing building science research to properly air seal, insulate, and ventilate to ensure that we ended up with a house that’s hopefully durable, stingy with its use of electricity, and that functions well on a daily basis for many years to come.

In terms of design, it meant spending an inordinate amount of time on the floor plan, carefully defining how we would move through and live in the structure, while also carefully considering the seemingly infinite options when it comes to finishes, both for the interior and the exterior of the home (with an emphasis on low or no VOC products to protect indoor air quality) .

With most of the wall assembly details finally in place on the house, putting up the charred cedar siding represented the first real transition from science to art. And with Passive House details mostly taken care of, we could begin to make decisions in real time regarding how we wanted the house to look, both inside and out, in terms of finishes.

Since our house is relatively small, at least by recent American standards, many of the sins associated with McMansions were easy to avoid (McMansion Hell faces lawsuit).

 

 

On a side note, if trends continue, owners of these McMansions may be in for a rude awakening when it comes time to sell:

 

South Barrington McMansions Languishing

 

McMansions at Fire-Sale Prices

 

Affluent Chicago suburbs aren’t alone in facing this dilemma:

 

McMansions No One Wants

 

Killing the McMansion

 

If such reports prove to be accurate, and tastes really are fundamentally changing, perhaps it can be tied to a growing awareness of climate change and its implications. After all, these larger homes tend to be energy hogs, not to mention maintenance nightmares because of poorly planned and executed construction details — in part, a consequence of preferring quantity over quality. Moreover, there’s a growing chorus of voices espousing the benefits of simplicity (e.g. the tiny house movement, or minimalism). This is often wedded to an appreciation for the handmade or artisan object, as opposed to the mass-produced, and typically homogenous, product.

Nevertheless, it seems doubtful that the suburbs will ever be abandoned wholesale, and for any number of reasons.

For more on suburbia, go here: Building in the Suburbs

 

 

Massing: Basic Forms

For our house, the structure is a basic rectangular box with a gable roof (long sides face north and south with the gable ends to the east and west). It’s not unlike the basic form most children would come up with if prompted to draw a house. We really like the simplicity of this kind of roof style for aesthetic reasons, but also for the ease of installation and the long-term durability of the roof.

 

When we concentrate on the essential elements in design, when we omit all superfluous elements, we find forms become: quiet, comfortable, understandable and, most importantly, long-lasting.
—Dieter Rams

 

Bronwyn Barry has even coined a hashtag for this use of very basic forms,  #BoxyButBeautifulespecially popular with Passive House design since it can help eliminate potential thermal bridges while making air sealing more straightforward.

 

1st layer rockwool at frt door

Wojtek installing Rockwool around the front door, next to the garage.

 

We tried to avoid having the garage as part of the front of the house, in particular having the garage door facing the street (a look I’m not fond of), but physical limitations, in terms of the lot itself, left us with little choice in the matter. So rather than repeat the gable roofline of the house, we went with a shed roof for the garage. The shed roof adds some visual interest, while it also ensures that any rainfall in this area immediately gets sent to the north side of the house where we want it — away from the foundation as well as bypassing the driveway altogether (water flows to the north on our street).

We also felt that these two rooflines fit in well with our Urban Rustic design aesthetic. As a mash-up between early 20th century city and farm, both the simple gable and stark shed rooflines would be equally at home in an agricultural setting or on a densely packed inner city block.

In addition, it was important to us to have some fun with color, so on the exterior using black charred cedar with some natural highlights would give us the bold look we were going for, while accent walls inside with bright, playful colors would help bring the interior to life, accompanied by hand-made or hand-selected decorative objects in various bold colors.

When done well, this child-like use of color can lend a space or structure a real sense of vibrant energy.

 

 

Already a fan of Jack White’s use of color for album artwork and the staging of live shows for The White Stripes, I appreciated the way he chose to decorate the exterior of his Third Man Records in Nashville. A form that was as basic as it gets — single story brick warehouse — becomes vivid and hard to miss, in a good way, with a splash of color on what would otherwise be a monochromatic black box. The “insert” around the front door, offering a little shelter with some nice shadow lines, along with the crisp signage finish off what is a clean, sleek, but still playful, look.

 

 

He’s done something similar with the interiors, in this case, for the Detroit store:

 

 

 

Siding Layout for our Charred Cedar (Shou Sugi Ban)

Since we were building custom, rather than working within the constraints of tract housing in a larger subdivision (as we did with our first house) where many of the design choices are already made for you, we knew we wanted to take some chances in terms of materials and layout.

It also helps that we’re in a neighborhood with mixed architectural styles, including single-family homes and townhomes, with structures and exteriors running the gamut between old and new, as well as traditional and contemporary. We felt like this gave us more latitude to try something different without upsetting the overall look of the neighborhood.

With a smaller structure and only two basic rooflines, we knew any experimentation or design risk was going to have to occur at the level of siding materials and their orientation.

Knowing its weaknesses, I never imagined using wood for any part of the exterior of my house should the day come when I could build my own home. Brick, stone, metal, any number of man-made products (e.g. PVC or Boral), all seemed like the smarter way to go to avoid maintenance headaches and costly repairs. I assumed we’d end up using Hardie plank siding, or one of their paneling configurations, or maybe even some kind of metal product.

But then I came across charred cedar, or shou sugi ban.

It’s hard to remember now exactly where I saw it for the first time since it would’ve been before 2015 probably, but I think it was a Dwell magazine profile of Terunobu Fujimori’s work. I may have even first seen the same architect featured in Philip Jodidio’s book Architecture Now! (HOUSES, volume 1). Regardless, once seen, it was hard to forget.

 

 

When we first began working with our initial builder, Evolutionary Home Builders, I brought them some rudimentary drawings I had done, expressing our desire to try something creative and out of the ordinary, especially in terms of siding layout.

 

sketch black:gray

An early drawing of mine showing mostly gray with black accents for siding.

 

Instead, their architect, Patrick Danaher, came back with an extremely conservative layout, one that’s fairly omnipresent when looking at single story ranch homes in the Chicago area.

 

ehb s and w elevations

Proposed siding layout from Evolutionary Home Builders.

 

Our use of charred cedar would have been the one change from what is typically a combination of brick or stone on the bottom 2/3 of a wall with painted or stained wood up above, usually with a limestone ledge in-between to visually and physically separate the two materials.

 

brown - brick typical layout

Popular way to break up the cladding on a ranch home, in this case mixing brick and wood.

 

 

brick w: light sd

Another example of the same layout, this time with lighter colored siding.

 

The photos above are included not to disparage this look, which I actually like, but to give specific examples from our area of this traditional layout; one that’s seen on probably thousands of homes in just the Chicago area alone. Although attractive, I couldn’t help but feel that this layout was a cliched repeat of what’s already been done countless times before, which, nevertheless, would’ve been entirely appropriate had we been asking for a more traditional look.

Instead, it was pretty shocking to get their initial drawings since I had clearly expressed our willingness to think outside the box in order to experiment with something unique and fun, even avant-garde (or, at the very least, contemporary). The fact that Brandon Weiss (the owner) and Eric Barton (chief field officer) were also in these design meetings and they, too, had nothing to offer on this point did not seem to bode well for our project.

Initially I lacked the confidence to argue against Patrick’s suggested layout (they’re supposed to be the experts, right?). I just assumed my ideas were simply too bizarre to work. Over time, particularly as I saw how they did things with a lack of care and a lack of attention to detail (see below), combined with looking around online and seeing how other projects experimented with unique siding layouts, I eventually realized there was no reason not to try something bolder and more well thought-out.

In the meantime, I put together a fairly large sample board, mixing the charred cedar with the natural cedar mostly in accordance with their initial suggested layout:

 

charred cedar sample board with natural

Sample board with natural and charred cedar.

 

This sample board, although attractive, confirmed a couple of things I was worried about:

First, the layout was way too traditional looking, even with the charred cedar.

Second, this amount of natural cedar around the house would be a pain to maintain over the years, costing me significant time and energy, if not money (the maintenance labor would be DIY), probably requiring a fresh coat of tung oil at least every other year, if not annually. Since we wanted a natural look, any kind of traditional spar varnish, or other shiny clear-coat, didn’t seem appropriate. Although one option, open to us even now, is to just let the tung oil break down and let the natural boards turn gray over time (although it can be a somewhat unpredictable process).

Finally, since we felt the charred wood next to the natural was visually so electric, I thought it best to limit the combination to try and heighten the effect.

 

natural-and-charred-together

“Natural” cedar, treated with tung oil, next to the charred cedar.

 

In the end, Patrick’s suggested layout struck me as rather staid and uninspired (if not, to put it bluntly, half-assed).

On a side note, we didn’t have much luck with the three or four architects we came across during our build. They seemed mostly disinterested when they weren’t outright lazy. See the floating toilet in our initial drawings:

 

floating toilet

First look at our initial drawings from Evolutionary Home Builders — note the floating toilet in the middle of the basement floor.

 

No one — not the architect of record, not Patrick, not even Brandon the owner — could be bothered to give the drawings even a cursory edit/revision before handing them over to us. This certainly planted the seed, along with their generally disordered style of communication, that all was not well regarding the level of care, or even interest, our project was going to receive from them for the duration of the build.

I guess the situation could’ve been even worse:

 

 

Unfortunately, the issues we had in establishing our siding layout were emblematic of our overall experience building a new house, whether it was with architects, general contractors, or some (but certainly not all) of our sub-contractors: we were shocked by the overall lack of integrity, curiosity, and workmanship.

Far too often it felt like rather than having partners in an exciting process we were actually being held back by people who didn’t seem to really enjoy what they did for a living. Making matters still worse, not only did they seem bored, but the work itself was often mediocre when it wasn’t clearly incompetent.

Unfortunately, even acting as our own GC didn’t help matters, since a competent GC with a long track record has had the time to develop relationships with subcontractors he or she can trust to deliver in terms of schedule and craftsmanship.

I keep coming back to these issues in multiple blog posts mainly as a warning to others who are considering pursuing their own self-build (or even hiring a general contractor to do the work for them), encouraging them to have realistic expectations and to better understand just what they’re up against when it comes to the construction industry — particularly if they wish to try anything new or different.

At any rate, with the decision made to use the charred cedar, we went ahead and prepped the wood before construction began. You can read about the details here:

Cedar Siding Delivered…
Oiling Charred Cedar Siding

 

 

Installing the Charred Cedar

With all of the components of our wall assembly in place, Wojtek and Mark finally started installing the charred cedar on the house, beginning with the garage. This was easily one of the most exciting moments of the build.

I think Wojtek and Mark were secretly excited, too, if only because they were finally finished with all of the insulation and layers of strapping.

 

1st pce char going on

Wojtek and Mark installing the first piece of charred cedar on the south side of the garage.

 

 

1st few rows south sd sd gar

Wojtek and Mark making progress on the south side of the garage.

 

It was more than a little exciting to see the first pieces going up, especially considering how far off-track our project had gotten early on.

 

s garage char 1:2 way

First few rows of charred cedar going up on the south side of the garage.

 

With no choice but to have the garage thrust forward and so prominent on our front elevation, we just had to make the best of the situation. One way of addressing it was to shake up the orientation of the charred cedar. Since the house itself was going to be all vertical (we just find it more interesting), it made sense to change the north and south sides of the garage to horizontal.

 

south garage 1st pce east wojtek and mark

Wojtek and Mark starting the east, vertically oriented, side of the garage.

 

In doing so, on the south side by the front porch this horizontal orientation would draw in the viewer’s attention, hopefully pointing it towards the front door of the house. Even as you walk up the front steps this horizontal orientation, I would argue, does its subtle magic fairly well. At the street, or out in the front yard, this effect seems to work even better.

 

garage south sd start east wojtek and mark

Finally getting to see the combination of horizontal and vertical orientations combined.

 

In mixing the siding’s orientation in this way it also helps to show what the material can do visually. Lastly, having these two sides of the garage oriented horizontally should also emphasize that this portion of the structure serves a different function (i.e. garage vs. house).

After having the charred cedar hidden away in storage for so long, it was extremely rewarding to finally see it going up.

 

close up char on garage texture

Close-up of several charred cedar boards.

 

It was nice to see that it was every bit as beautiful and interesting to look at as we had initially thought while making it.

 

oil and texture on garage sd

The range of textures and subtle variation in color makes the charred cedar truly unique.

 

In keeping with our Urban Rustic aesthetic, the charred cedar — which would look just as good on a farmhouse or outbuilding as it would on an early 20th century artisan workshop or small factory warehouse — also represents our desire to bring in elements that reflect the Japanese notion of wabi-sabi.

 

 

For example, stressing the wood with fire instantly gives it an aged appearance, and the amount of variation also makes clear it’s a natural material, as opposed to an industrial product manufactured to meet narrow and precise tolerances, with the goal being absolute uniformity. Whether it’s the knots, the lighter or heavier areas of char, some areas of natural cedar peeking through, or the ‘oil stain’ marks, the charred cedar emphasizes and celebrates imperfections and inconsistencies in the wood, sometimes to great effect even within a single piece — to the point where the most singular board catches your eye and you can’t help but linger over it. Instead of being annoyed by difference, the charred cedar actually encourages you to go looking for the most unique boards.

 

 

Following installation guidelines, Wojtek and Mark used only stainless steel nails to attach all of the cedar siding.

 

garage sd out front door

View of the garage from the front doorway.

 

 

south gar sd mostly done mark in bg

First look at a large section of the charred cedar siding installed.

 

 

south gar sd bringing you in to frt dr

A second view.

 

With the south side of the garage mostly complete, Wojtek and Mark could move on to the north side.

 

n side garage furring and coravent

North side of the garage prepped and ready for siding.

 

 

1st pce north gar sd

First few pieces going up on the north side of the garage.

 

For the soffits, we were initially going to use another Cor-A-Vent product, their PS-400 Strip Vent to complete our ‘cold’ roof assemblies, which on the house already included a ridge vent.

 

Cor-A-Vent PS-400 Box

Box of PS-400 strips for soffit ventilation.

 

But after opening the box and really taking a look at the product, they just seemed really flimsy. I’m sure they work fine, but holding them in your hand doesn’t exactly breed confidence. Also, seeing Wojtek’s stink face as he carefully studied a couple of pieces only confirmed that we needed another option.

After looking around online, I ended up finding a product at a local Home Depot.

 

mesh for soffits

Metal mesh product we used for soffit ventilation.

 

Not only did the metal mesh appear more substantial, I thought it would look better with the charred cedar than the PS-400, making for a nice contrast with the wood. I also really liked how it revealed some of the structure through the mesh for a more raw, unfinished look — again, in keeping with our Urban Rustic design goals.

 

close up soffit screen complete

Close-up of the soffit metal mesh installed.

 

 

outside view n gar soffit

First section of soffit going up with the metal mesh in place for ventilating the roof.

 

 

mark w: gar soffit screen mostly complete

Mark waiting for a cut, with most of the soffit and siding installed on this side of the garage.

 

 

garage soffit w: screen complete

Section of soffit complete with metal mesh installed.

 

 

north garage sd soffit complete

North side complete, with the frieze board finishing off the rainscreen details.

 

We were going to copy a Hammer and Hand diagram for the top of a wall, in particular their rainscreen detail for the frieze board:

 

https:::hammerandhand.com:best-practices:manual:4-rain-screens:4-1-top-wall:

Courtesy of Hammer and Hand and their Best Practices Manual.

 

After talking through the details, Wojtek and Mark found the notch in the frieze board to be an overly fussy detail, preferring to keep this piece fully intact. To do this, they ripped down 2×2 furring strips to a thickness they could use as blocking behind the frieze board, pushing the frieze board out just beyond the plane of the siding, leaving a roughly 1/4″ continuous gap.

Apart from slightly more room directly above the Cor-A-Vent strip, the end result is much the same — a small gap between the frieze board and the top piece of tongue and groove siding allows air behind the siding to flow freely up and out of the wall assembly through the top of the Cor-A-Vent strips.

The Cor-A-Vent strips are kept about a 1/4″ below the initial blocking directly above them.

 

wd view top of garage rscreen

Top of the wall is ready for siding, and for establishing the air gap for the wall’s rainscreen.

 

 

mark blocking 4 frieze and vent

Mark adding blocking in preparation for the frieze board to finish off the top of the wall.

 

A close-up view from the side showing the details for the rainscreen at the top of the wall:

 

wide view garage frieze w: blocking sd

Top of the Cor-A-Vent and the top piece of siding. Frieze board being installed over blocking in the background.

 

On the house, the guys adjusted the placement of the frieze blocking, lowering it so that it was in line with the first layer of 2×4 blocking, thus closing off any unnecessary open space behind the frieze board.

 

close up rainscreen gap n garage

Close-up of the soffit with frieze board and air gap for the rainscreen directly below it.

 

With the north and south sides of the garage mostly complete, the guys moved on to the front of the garage.

 

garage south sd start east wojtek and mark

Wojtek and Mark moving across the front of the garage with the charred cedar now oriented vertically.

 

The change to our wall assembly — using 2×4’s instead of 1×4’s for our first layer of strapping so that the siding could hang down just past the metal flashing and Rockwool on the foundation — had one nasty unintended consequence for the north side of the house: the 14′ boards we had purchased, charred, and oiled were now about 3″ too short — they were initially supposed to sit just above the flashing and Rockwool, not hang down several inches below this area.

With little time to spare, since Wojtek and Mark were cruising right along, my wife Anita and our friend Maria worked tirelessly to get longer boards completed in time, while I tung oiled each board almost as soon as it was burned.

 

char as garage sd east goes up

Anita starting to burn additional boards as Mark and Wojtek keep working.

 

 

most of east side garage complete

Mark mostly done with the front of the garage.

 

For the front of the garage, Wojtek and Mark repeated the same rainscreen details, only this time with the siding oriented vertically.

 

sd soffit w: frieze for vent gap

Overhang on the front of the garage: frieze board completing the rainscreen, soffit boards, and rake boards being installed.

 

 

garage soffit and rake

Closer view of garage soffit and rake being installed.

 

 

garage side view strapping vent sd

Cut away view of the siding with a rainscreen set-up behind it.

 

Wojtek and Mark did a nice job with the soffits at all of the outside corners.

Note the ‘tiger striping’ on the bottom edge of the rake fascia board, along with the variation in color and texture from one board to another — an example of ‘perfectly imperfect’ according to wabi-sabi principles — including the subtle pencil marks for their cuts (still visible almost two years later).

 

outside corner soffit w: tiger stripe

Close-up of the garage soffit at an outside corner.

 

 

nw corner garage start n sd

The guys making the transition from the garage to the north side of the house.

 

For the north side of the house I wanted to keep the charred cedar a monolithic black. The only real relief from this was the change in orientation of the siding from the north side of the garage to the house, along with a single window for my daughter’s bedroom.

 

north side char

Charred cedar on the north side of the garage and the house.

 

Knowing that the other three sides of the house would be getting some natural cedar accents, I thought keeping at least one side of the house entirely black would make for a nice overall effect.

 

mark at mechanicals

Mark working around the mechanicals on the north side.

 

The Pittsburgh Steelers did something similar, having their team logo on only one side of their helmets, leaving the opposite side a solid black. I always thought this was visually striking.

 

 

 

 

Installing the Natural Cedar Accents

The west side of the house would be the first opportunity to use some of the natural accents. Based on my initial drawings and the sample board, I wanted to limit the natural as much as possible while still allowing it to have a strong visual punch.

 

stacks of nat'l and char in garage

Natural cedar boards tung oiled and ready to be installed.

 

I wanted to take advantage of the drop-off in grade that’s present in the backyard by using the natural boards around the window on the left. In doing so, it would draw attention to the change in grade, emphasizing that the left side of the west facade is significantly taller than the right side.

Using the structure of the window itself as a guide would help me to decide exactly how many natural boards to use.

 

west 1st cple pcs nat'l wojtek and mark

 

In addition, I knew I wanted a more informal look, making it consistent with our Urban Rustic and wabi-sabi design goals, so using an odd number of boards in an asymmetrical way would help achieve this.

 

west after 1st few nat'l pces

Adding natural boards around the window on the west facade.

 

By focusing on the window in this way, 11 natural boards turned out to be the right number. Looking closely at the way the window itself is framed (large center piece of glass surrounded by two smaller pieces), if we had gone with fewer boards the natural would be too far away from the dead center of the window opening, so insufficiently ‘wrapping around’ the window, while any additional natural boards would’ve risked being too close to dead center, making the overall look too symmetrical.

Obviously, a lot of the details regarding these decisions are subjective, but having some kind of framework for a final decision is nice to have, rather than going strictly on instinct alone.

 

mark just past nat'l on west

Mark completing the natural accent around the left window.

 

It was only after Mark went back to the black charred siding that I was sure we had exactly the right amount of natural boards around the window.

 

mark and wojtek west sd after nat'l

Mark approaching the center of the west facade.

 

By going just past the first piece of glass, the natural boards have a nice asymmetrical look to them — hugging or slightly wrapping around the window just enough, making a connection, but not too much.

After so many months of planning, worrying, and waiting — and then finally getting to see this combination of charred cedar with the natural cedar — watching the siding go up was easily one of the most gratifying parts of the entire build.

 

wojtek burning cut edge

Wojtek and Mark were nice enough to take the time to char all the cut edges.

 

When the guys got to the middle of the west facade they were in for a nice surprise — dead center of the peak lined up perfectly with the seam between two boards.

 

lking up sd at west peak

Looking up at the center of the west facade.

 

 

lking up sd at west peak wider view

Wider view of the peak on the west facade.

 

On most houses the back side tends to be rather boring, as if it were mostly forgotten about (at least in visual terms). In part this is no doubt because the details used to create visual interest are normally reserved for the front elevation where they can show off to the street. Where the front might be covered with stone accents, metalwork, elaborate lighting fixtures, or some other decorative accents, the other three sides tend to blend together as the basic siding material just continues its standard layout or pattern around the perimeter of the house. These decorative accents add cost to a build, so it makes some sense to reserve them for the side of the house that most people will see.

 

west facade sd after peak

 

Sometimes, however, this effect can be jarring. In a Chicago suburb there’s a house that uses elaborate stonework on the front facade, which in this particular case is actually two sides that face the street, but when you walk around to the back of the home the siding material transitions to wood. Because the transition is so abrupt, and the quality of the materials is so different, in terms of both cost and visual impact, it almost feels like walking behind the elaborate facade of a building on a movie set to discover it’s only a single wall propped up to mimic a much more substantial building. This lack of cohesiveness lends a kind of sadness to the house, as if it announces that the elaborate plans for the exterior cladding were ruined by unexpected budget constraints.

 

west sd mostly done guys start south

 

Consequently, we felt it was important to give each side of the house its own distinctive face. Because of the size and layout of our lot, and the way the houses next to us are positioned, it’s difficult to view more than one side of our home at any one time, which only encouraged us to make this a priority.

 

west facade after sd b4 gutters

West facade mostly complete.

 

Quick side note: these windows on the west facade are the ones with Suntuitive glass. Because of this, we’ve never required any blinds or any protection from glaring afternoon sun. As a result, we’ve been able to enjoy a constant, unimpeded view of the backyard.

More than a year after the siding had been up my daughter and I were in the backyard doing some gardening when she pointed out that the back of the house looks like David Bowie’s Aladdin Sane makeup. We have a magnet of Bowie on our kitchen fridge. She has a point.

It’s not difficult to see a face in the facade, and the music reference fits in nicely with our rock ‘n roll theme for the interior of the house.

 

 

The effect of the natural cedar is also reminiscent of racing stripes, especially those seen on sports cars or muscle cars, or even motorcycles (e.g. the graphics on racing sportbikes). This was partly done with tongue planted firmly in cheek — if high-performance cars and motorcycles look good with racing stripes why not on a high-performance home? — but mainly because I’ve always enjoyed the visual power of these types of graphics.

 

sd west b4 gutters

Waiting for gutters and downspouts.

 

Also in keeping with the racing stripes idea, we wanted the house to look distinctive on every side, much like the well-designed shape of the most memorable sports cars or motorcycles that look good from almost any angle.

At the beginning of each episode of Comedians in Cars Getting Coffee Jerry Seinfeld does a great job introducing each vehicle, explaining why some of them — even if decades old and built with what we consider now to be obsolete technology — can still elicit such intense feelings of affection or outright joy.

 

 

And there’s no shortage of design options when it comes to racing stripes and their various layouts.

Many are symmetrical, for instance, a double stripe laid down in thick pairs with little space between. This style is popular on the hoods of muscle cars.

 

Shelby stripes

Shelby Mustang. This one is more elaborate with the added red stripes along the outside edges.

 

Sometimes the striping is fairly subtle, arguably more of a pinstripe effect:

 

 

And of course the racing stripes don’t always have to impart a sense of speed or domination, sometimes they’re a nod to smart, even cute, styling.

 

 

Motorcycle graphics are probably the most extreme version of racing stripes, many of them even outlandish, but mostly in a vibrant, fun way.

 

 

Ducatis look great when they’re fitted out in monochromatic red, or even all matte black, but white stripes definitely add another dimension to the overall look of the bike:

 

 

This is one of the more iconic layouts, from Honda’s factory MotoGP racing team, Repsol.

 

repsol full

 

I think the layout and color combination looks even better in close-up as a screensaver:

 

repsol screen saver

Vivid screensaver.

 

My favorite racing stripe layout is a combination of one thick and one thin, probably because of the asymmetry since it’s typically applied off to one side, or offset, rather than applied directly down the center.

 

love bug

“Herbie” for sale in an antique shop in Cincinnati.

 

Another example of this thick-thin combination:

 

racing strip hash marks wheel

Hash marks on the wheel of a Dodge Charger.

 

The other nice thing about the racing stripe idea was that, as a visual motif, we could carry it over into some of the interior finishes. This is something we intended to do with the charred cedar as well — using an element from the exterior to decorate a part of the interior.

The blue-green-white combination, long associated with Kawasaki, would prove to be the most overt example where we would borrow some famous imagery from motorcycle racing and apply it inside the house in a new context, but for much the same reason, namely trying to impart a sense of playful energy and added brightness (more on this in a future post).

 

 

At any rate, I really enjoyed coming up with a kind of narrative for the look of the house, hopefully showcasing, in a unique way, what the charred cedar and the natural boards can do visually as siding on a home.

For the south side, we decided to use the kitchen door as our guide for putting up the natural cedar, while the front door would be used on the east-facing facade.

Another element around the two doors to consider was exterior lighting. A single fixture at each door would project an upward and downward concentrated beam of light, highlighting the natural boards in the dark as they pinpoint their focus on this band of natural wood surrounded by total blackness.

mark ready for natl at kitch

Mark almost ready for the natural cedar boards.

 

We started the natural boards to the right of center of the door’s glass, cheating a bit so that they started pretty much directly above the door handle.

 

1st couple at kitch

 

It also worked out nicely that the natural boards ended up in an A-B-A pattern from back of the house to front; meaning to the left of the window in back, to the right of the kitchen door, and then to the left of the front door.

 

mark past natl at kitch

Mark and Wojtek moving past the natural cedar boards.

 

We ended up at 5 boards for this side of the house, allowing the striping to stay proportional to the size of the opening while sitting just beyond the eventual light fixture. It also helps that the kitchen door, made up largely of glass and a neutral gray color, doesn’t take any attention away from the natural boards.

 

kitch dr

Kitchen door with its charred and natural cedar.

 

At the front door, I initially pictured the natural boards installed on the right side of the entryway. In two dimensional drawings this seemed to make sense, but after seeing everything in place in reality, it became pretty clear that to the left of the front door would be far better. To the right of the front door would’ve meant the natural boards would look ‘squeezed’.

 

1st pce nat'l at frt dr

Putting up the first piece of natural cedar around the front door.

 

 

mark finishing up nat'l at frt dr

Mark nailing in the first couple of natural boards.

 

Starting the natural boards just outside where the light fixture will sit, we ended up at 7 total boards for around the front door. Since the front door is slightly larger than the kitchen door, and it’s the main focus of the house, it made sense to have slightly more natural boards in this area.

Many thanks to Wojtek and Mark for their patience in playing along as I figured out exactly how many natural boards to use, and exactly where they should be positioned.

 

mark just after nat'l at frt dr

 

As each section of natural boards went up, it was evident that beyond a certain point the racing stripe effect would be lost: one too many boards and it wouldn’t look right, in effect, overpowering the opening; too few boards would mean not enough impact — less like a proper decorative accent and more like a disconnected mistake.

 

sd done b4 frt dr

First look at the east facade fully sided. Our little black box almost complete.

 

Bob Riggs, his son Brian, and Jason were nice enough to come back to install my front door for me. We used the Hannoband expanding foam tape to seal around this door, just as we did for all of the other windows and the kitchen door.

Check out the details of their installation here:

Windows, Doors, and Suntuitive

 

Brian Jason Bob install front door

Brian, Jason, and Bob install our front door.

 

 

frt dr frt yard

Front door just after installation.

 

The front porch with its charred cedar, natural cedar, and the bright red door reminds me of Coco Chanel’s famous “little black dress ensemble” — the charred cedar the little black dress, the natural boards the string of pearls, and the front door the splash of red lipstick.

 

 

Our shiny front door is the one sleek, clean, and clearly new element of our exterior. This contrast between industrially produced, sharp looking object and the burnt and heavily knotted wood in some ways personifies the Urban Rustic aesthetic.

 

frt dr clup b4 trim

Close-up of the front porch just after the door was installed.

 

 

Installing Sill Pans

When most of the siding and overhangs were complete, Wojtek and Mark started installing the metal sill pans for all the windows and doors.

Greg, the owner of Siding and Windows Group, suggested we use Lakefront Supply for all the flashings, which turned out well as they were able to create exactly what we needed.

 

sill pan inside edge b4 return trim 2nd view

Metal sill pan slid under bottom aluminum edge of the window.

 

In the photo below you can see the horizontal layer of 1×4 strapping, which becomes a nailing surface for the 1×6 cedar board that will be used as a return back to the window frame.

 

inside corner sill pan b4 return trim

A second view of the same area.

 

 

mbr wdw w: sill pan b4 final pce trim

From inside looking down at the sill pan.

 

 

side view sill pan edge beyond sd

Outside edge of the sill pan.

 

 

south wdw after sd b4 trim

Window waiting for the last few pieces of trim.

 

We were going for a “frameless” look for the windows; meaning, once all the trim was installed, very little of the window frame is left exposed.

 

k wdw trimmed out fmly rm wdw bg

Kitchen window with all the trim pieces installed.

 

 

innie wdw face - frameless look

Once the screens were installed, there was almost no room to spare. We really like this “frameless” look combined with the “innie” window position — it creates some really nice shadows at various times during the day.

 

 

frt dr sill pan

Front door sill pan installed.

 

 

kitch dr sill pan

Kitchen door with the sill pan installed.

 

 

Wojtek installing first sill pan

Wojtek pulling off the protective plastic on the sill pan.

 

 

mark and wojtek install 1st pce garage roof flashing

Mark and Wojtek installing flashing on the top of our garage roof.

 

 

2nd shed rf flash

Wojtek screwing down the flashing.

 

All of the elements finally in place: master bedroom window with natural accent, charred cedar used to return the siding back to the frame of the window, with the metal sill pan underneath.

 

mbr wdw frame sill pan

 

 

Gutters and Downspouts

For the gutters and downspouts we went with Nordic Steel. They’re expensive, but they’ve lived up to the marketing claims: with a larger half-round gutter and wide diameter downspout, we’ve never had to clean out our gutters (so far, anyway). They also look really nice, and they fit in well with the Urban Rustic feel we’re going for.

 

nordic ne

 

 

nordic n

 

 

Decorative Details

It was exciting to finally get the small, decorative pieces for the exterior out of storage. For example, I purchased our metal house numbers and our front doorbell on Etsy, at Modish Metal Art. As it turned out, Etsy proved to be an invaluable resource, both for decorating the exterior and the interior of our house (more on this later).

Our exterior lights were found on Amazon: Hyperikon

 

house numbers out of storage

‘Wobbly’ house numbers.

 

 

doorbell

Gecko doorbell finally installed.

 

 

house # and drbell

Front door details complete: trim, sill pan, doorbell, house numbers, and exterior light.

 

I found these white porcelain numbers on Etsy — made in Japan, so they seemed perfect for our shou sugi ban. Unfortunately, this Etsy store is no longer in business.

With some Spax screws, and the charred cedar as a background, the white numbers really pop.

 

708 white porcelain w: spax

 

 

Stucco for Inside Window Wells

For inside our basement window wells we initially thought we would just carry the wood siding all the way down. Once the retaining walls were in, and we saw how complicated the cuts would need to be around the stone — not to mention all the work required in hammer drilling concrete bolts into the foundation to establish strapping for the charred cedar — we realized wood wasn’t really a viable option.

After contacting Rockwool directly, they told me stucco over the exposed Comfortboard 80 would work fine, although it wasn’t presented as an option in the paperwork they had originally given to me. This was a great relief, and Wojtek had a friend who installed stucco, so it ended up working out really well.

The window bucks around the basement windows took a real beating during the prolonged construction process, so I touched up the sills with Prosoco’s Fast Flash to make sure they were watertight.

 

Tomasz

Tomasz installing the lathe with long concrete screws in preparation for our traditional 3-coat stucco.

 

Tomasz would eventually take the stucco up to the Cor-A-Vent insect screen, and then Wojtek and Mark would lower the charred cedar below this point by several inches, completely hiding the seam between the two materials.

 

stucco 2nd coat k dr

Charred siding, corner of the window well, and the stucco (only 2 coats at this point) meet.

 

For the railings around the window wells we wanted to use a hog wire panel (in keeping with the Urban Rustic theme). Initially, I thought I would use Wild Hog Railing combined with wooden posts, but decided an all-metal railing system would be better, mainly for durability reasons.

 

wdw wll 3

Gutters going up just after the railings around the window wells were installed.

 

 

wdw wll 2

View of the railing from a basement window.

 

 

How Durable is the Charred Cedar?

Initially at least, our luck hasn’t been great with the charred cedar.

For instance, during our first summer with the siding last year we noticed that we had some carpenter bees buzzing around the house. At first, I didn’t think much of it since the charred cedar is supposed to be insect-resistant. But then I noticed a bee digging a hole above one of the windows and realized something needed to be done.

After reading up on their lifecycle, I used a spray inside the holes that were present (about 10 total after I went looking), following up a couple of days later with a few puffs of diatomaceous earth. After waiting two more days, I then stuffed each hole with some steel wool before covering each entry point with some black sealant. Once patched, these areas are virtually invisible.

This spring and summer we kept a careful eye on these specific areas, along with the house more generally, but no bees emerged, so it looks like the problem has been resolved. Nevertheless, it’s something we’ll need to look for every May and early June.

Looking back, the bees nested in the exposed sub-fascia on two sides of the house before the siding and overhangs were installed. At the time, not understanding their lifecycle, I just plugged these holes with some caulk, thinking that would suffice. Unfortunately, it wasn’t, and their offspring emerged the following spring/early summer digging through the charred cedar fascia. If I had properly addressed these spots with a spray and then diatomaceous earth combination initially, there’s a good chance I could’ve avoided this problem altogether.

Since their offspring return to the area where they initially emerged to create their own nest sites (or even to reuse the existing one), it’s extremely important to address the problem as soon as possible, otherwise one or two small nests can quickly expand to dozens of bees swarming around the eaves of a home in early summer. And, even more sinister, it’s these nesting tunnels that attract the attention of woodpeckers who go looking for them, hammering the wood to get to the larvae below the surface, and scarring, if not ruining, the wood in the process.

In fact, this past January there was a morning where I heard a sound like a machine breaking down, almost like a chain breaking off its wheel. When the sound moved across to the other side of the house I suddenly realized it was a woodpecker. Luckily, he was sitting on a downspout right outside our window, so just opening the window was enough to startle him and make him fly off. When I went outside to look for damage I only saw a couple of small spots, as if he were just testing the wood for insects and found nothing. Thankfully, he hasn’t been back since. We’re hoping it stays that way.

Also, after the siding was up for about a year, especially after its first summer, it started to show some wear. Since the north side has held up the best, I can only assume it’s exposure to the sun that caused most of the wear to occur on the other three sides of the house and garage (although I’m sure rain played its part, too).

 

north light orange

Although showing some wear, these boards have retained their orange and yellow undertones on the north side of the garage.

 

In general, areas with a heavier layer of char have held up better, but sometimes even in these areas we’ve seen some missing char develop.

Here are some pictures showing the extent of the fading:

 

west b4 tar

West facade facing the backyard.

 

 

kitchdr19b4

South side.

 

 

s east end b4 tar

Another view of the south side.

 

 

south garage b4 tar

South side of the garage.

 

 

garage b4 tar

East-facing side of the garage.

 

The wear occurred slowly, so it kind of crept up on us. At some point, both my wife and I started to remark on the changes. And some areas are far worse than others:

 

close up missing char

Arguably the worst area of fading on the charred cedar.

 

Although the charred wood wasn’t in any immediate danger, and I enjoyed this ‘aged’ look, my wife said she preferred the original, more opaque, black look of the siding. And to be honest, since many of these exposed areas were turning gray, I worried about how well any product we might try in the future would soak in and adhere, so I decided to address it this year rather than wait any longer.

Thankfully, I was aware of Kent’s blog, Blue Heron Ecohaus, having seen it featured on GBA. He goes into detail regarding his decision to use Auson black pine tar instead of going with a shou sugi ban finish.

Our siding was installed in the Fall of 2017, and last summer I experimented with the recommended 50/50 mix of Auson and linseed oil, using it to touch-up a handful of boards, including all the cut edges that Wojtek and Mark had meticulously burned. Without any tung oil, these exposed edges had faded badly, almost to the same consistent gray on every piece. Again, this may be because they didn’t receive an especially heavy level of char when burned, but I can’t know for sure.

The guy in this video had a lot more fun applying the product than I did:

 

 

Even though the charred wood is said to easily last for decades, we also knew that it should get oiled about every 15 years to improve its durability, so having to do touch-ups wasn’t as heartbreaking as it might otherwise have been. I guess our 15 year mark came early. It also helped that it wasn’t necessary to do any overhangs (fascia or soffit) — those areas seem to be holding up really well, including the areas of ‘tiger striping’.

 

tiger striping on south overhangs

Area of fascia and soffit on the south side of the house with ‘tiger striping’.

 

Here are some pictures of the ‘refreshed’ charred cedar:

 

w sw as pine tar being applied

Starting on the west side with the black pine tar.

 

 

pine tar fmly rm wdw - bleached out to rgt

Making progress on the south side.

 

Our little black box with revitalized skin:

 

w after tar evening

West facade complete.

 

 

south west fmly rm after tar

Southwest corner after pine tar.

 

 

south tower after tar

Another view of this southwest corner.

 

 

porch after tar

Front entry and the south side of the garage after pine tar.

 

 

front after tar

Another view of the east facade after the pine tar.

 

 

708 after tar

Closer view of the charred cedar after the pine tar.

 

 

close up char texture after tar

Close-up: the black pine tar had no negative impact on the heavily charred areas.

 

 

after tar still variation color texture

On areas with the lightest char the black pine tar soaked in but didn’t completely make the surface an opaque black. My guess is, a second coat probably would’ve made it opaque.

 

If I was going to do charred cedar, or shou sugi ban, again — at this point, that’s a big ‘if’ — I would definitely insist on doing a uniformly heavy char finish (or ‘gator’ finish), and I would use the black pine tar to try and seal-in the char as much as possible. As beautiful as the lighter charred areas were when they first went up, they just couldn’t stand up to the weather — at least that was our experience anyway.

Nevertheless, the pieces of shou sugi ban that we’ve incorporated into our interior have held up nicely with just a tung oil finish, showing no signs of deteriorating, presumably because they’ve avoided any direct sun or rain (more on these areas in a future post).

Another option would be to use a metal siding version of charred wood:

 

Bridgersteel

 

I’m guessing it’s expensive, but it could be a viable alternative, especially for those unwilling or unable to do maintenance chores for the charred wood siding over time but who are, nevertheless, in love with the look of real shou sugi ban.

 

Still another product worth considering:

 

Thermory USA

 

This product is newer, so its long-term durability is still debatable until time proves definitively one way or the other, although the idea does seem promising.

On a bad day — like when I had to hunt down carpenter bees, or touch-up the char with the pine tar — I know I should’ve gone with a more care-free siding material like metal. And yet, on most days, when the overhangs and siding are perfectly fine, it’s hard to argue against the singular look that charred cedar can produce.

 

sd at kitch dr at night

Kitchen door and stoop with the light on.

 

So even with all the time, effort, money, and frustration that’s gone into making the charred cedar work, I still love the way it looks every time I pull into the driveway, or notice it while working in the yard. It’s just important to understand that as with anything worth doing, or any labor of love — like building our house it could be said — it comes at a price.

 

frt dr w: light

 

Oiling Charred Cedar Siding

0

Shou Sugi Ban with Tung Oil

The oil I see used most often on charred wood is Penefin, which is available in many of the big box stores. Another one I’ve used in the past is Sikkens. Cabot is yet another brand I’ve used (mostly for decks).

Any semi-transparent wood stain should work. If you go with a brushed char finish, you may want to experiment with color options to see what kind of effect it may have on the final finish (the semi-transparent stains typically come in a range of subtle color choices).

In our case, we decided to use Tung Oil mixed with Citrus Solvent (available from: realmilkpaint.com). Having used it previously on arts-and-crafts projects with good results, and because it’s considered No VOC, we felt it was a good choice (although not the cheapest option). We’ll also be using the same combination of products for our hardwood flooring.

 

tung-oil-citrus-solvent

Tung Oil & Citrus Solvent. We use a 1:1, or 50%-50% mix that combines the two products together.

 

We used a 1:1 mixture of Tung Oil and Citrus Solvent (they even sell it this way, pre-mixed, if you don’t want to deal with combining individual batches together). The Citrus Solvent acts like a traditional paint thinner (without the VOC’s or strong chemical smell), diluting the Tung Oil so it can more easily soak into the wood (it also smells great since it’s made from orange peels). The Citrus Solvent is also used for cleaning up tools, equipment, and any spills of the tung oil (also works great as a general purpose degreaser — especially above and around a stovetop).

USE CAUTION! — Although natural and safe, the Citrus Solvent can irritate bare skin. I always use either Latex or Nitrile gloves (readily available at any hardware store).

If you try using the Tung Oil alone, the difference in performance is obvious (the oil will mostly just sit on the surface, with little of it soaking in — a frustrating waste of time and money).

I decided to use a trough for dipping each board based on a project I saw online:

 

SONY DSC

Spartan & Hannah’s Home: zeroandbeyond.com

 

Their house and blog caught my attention early on, when we were just beginning to think about building new. Their project, along with several others, really got me excited about the possibility of building “green”.

Here’s a couple more:

Four Thick Walls (blog)

GO Logic (Red House project; featured in the video below)

 

 

Spartan and Hannah’s home (zeroandbeyond.com) is an excellent example of the Pretty Good House concept, and it’s definitely worth checking out, especially under the heading of Presentations: How to Build an Affordable Net Zero / Super Energy-efficient Home (pdf).

A lot of great information to get you thinking about exactly what it is you may want to build, and how to financially pull it off. They also have a lot of thoughtful and inventive design elements (love their granite floor built with cut waste from various countertop jobs — a very creative idea with a unique look).

Anyway, back to the trough: It’s much faster than trying to use a brush or roller, and it guarantees full coverage (many thanks to Spartan & Hannah for posting this simple, but time saving idea).

Below is my version of the same thing:

 

trough-long-view-from-side-up-drive

Made from scraps with 1×12 pine for the sides, and then 3/4″ plywood on the bottom. There are also 2×4’s underneath for structural stability. It’s about 1′ longer than our longest board, making it easy to get boards in and out (roughly 17′).

 

 

trough-long-view

Inside the trough, and to the right, I used cut ends of 2×4’s to create a ledge to rest the piece of cedar on while wiping it down with a squeegee. On each end of the trough I added a 2×4 to make it easier to lift and move around.

 

 

trough-looking-in-and-down-w-tung-oil

Once built, I went back and caulked all the seams, and any deeply set screws. We fill the trough with 6-8 gallons of the Tung Oil & Citrus Solvent mixture. It lasts quite awhile (and it’s fun to soak the boards).

 

Once in the trough, we would let each board sit for about 30 seconds in the Tung Oil and Citrus Solvent bath, before pulling it up and resting it on the 2×4 ledge. Seated on its perch, the board would get wiped down initially with just a squeegee.

 

board-in-the-trough

Soaking for 30 seconds.

 

 

sitting-on-the-edge-for-squeegee

Resting on the 2×4 ledge for wiping down the rough side.

 

 

squeegee-back-side

Board flipped, resting on the ledge, wiping down the smooth side.

 

 

on-the-ledge-ready-for-drying-rack

Board wiped on both sides, now ready for the drying rack.

 

At this point, we would walk it over to the drying rack.

 

drying-rack-wide-view

 

 

drying-rack-end-of

Picked up these inexpensive sawhorses at Home Depot. The 2×6 is screwed to the horse from below. We used 6″ screws to make our rows.

 

Once on the rack, we would use a brush to apply an additional coat of Tung Oil and Citrus Solvent, but only to the rough side, since it will be exposed directly to the elements.

 

close-up-drying-rack-w-screws-brushed

A board on the drying rack, just after being brushed with the Tung Oil. Spacing out the 6″ screws gives enough room for 10 boards.

 

After about 20 minutes on the drying rack, we would wipe down both sides of each board (the most laborious part of the job). Usually by the time you’ve placed the tenth board and brushed it, the first board is ready to be wiped down. We found that dust free cotton rags are the best option for this.

Typically, there’s not much oil left on the surface, as most of it has soaked in. The wiping just removes any excess that could cause an unwanted film to form on the surface of the wood (not attractive).

 

oiled-board-mostly-dry-ready-for-wipe-down

Board ready to be wiped down after resting for at least 20 minutes on the drying rack — most of the oil has visibly soaked in.

 

The only real down side to the wiping (apart from the time, energy, and the cost of the rags) is that it makes the boards more uniform in appearance — in other words, some of the texture in the gator look is lost due to the wiping. Nevertheless, this comes with an added benefit, namely, removing any char that might otherwise flake off in the first couple of rainstorms.

When the boards are finished and completely dry, the finish looks very durable (and sleek).

 

oiled-charred-boards-on-the-stack-to-dry

Oiled boards.

 

 

oiled-stack-begun

Oiled boards being stacked for drying.

 

Depending on temperature and humidity, it takes roughly a week for the boards to be dry to the touch.

 

monkeys-helping

My helpers. This is the fun part: applying Tung Oil to new boards — the change in appearance is immediate and dramatic.

 

 

natual-cedar-oiled

Oiled  “natural” cedar, waiting to be wiped down.

 

 

natural-and-charred-together

Natural oiled cedar next to charred cedar. We’re going to keep some boards natural as an accent.

 

It’s the wiping down of each board that requires some real elbow grease – no surprise my daughter disappeared at that point in the process (can’t blame her, it’s tedious work).

As long as you have at least two people working together — pulling boards, dipping, transferring to the drying rack, and then wiping down — the process isn’t too bad. Going solo would get old very quickly. It’s even better if you have a couple of people just setting up the drying rack and wiping down while a third person pulls boards and dips.

There’s no question the process takes time and effort, but the results are unique and, we think, very beautiful.

 

bee-on-charred-cedar

The last bees of the season keep showing up as we oil the boards. They can’t resist the citrus solvent. It’s always sad to see them go at this time of the year.

 

September, 2019 Update: To see how the charred cedar turned out on the house, go here:

Siding Part 2: Charred Cedar (Shou Sugi Ban)

 

 

 

 

 

 

Cedar Siding Delivered…

2

… LET’S BURN IT!!!

For our siding, we’re using an old Japanese technique for preserving wood called Shou Sugi Ban (aka: charred cedar — although any number of species of wood could work).

 

charred-cedar-burn-and-natural

Charring a 1×6 piece of cedar. This will likely end up as either a piece of window or door trim.

 

You can check out a series of helpful DIY videos here:

 

Starting Over…

 

There’s some flexibility in exactly how it’s done, and there are various looks that can be achieved. We’re going for mostly a “gator” finish, meaning the cedar will have an alligator skin-like appearance. This is considered a heavy burn.

An alternative way of doing it would be to “gator” it first with fire, then scrape the excess char off, leaving behind a smoother, lighter, but still charred and protected finish (see video below).

 

Video of Brushed Charred Cedar: Dry vs. Wet Brush

 

Here are a few pictures that highlight the difference:

 

charred cedar samples on driveway

2 boards on the left: gator finish / 3 boards on the right: brushed finish.

 

Once the charred wood has been oiled (whether it’s with a gator finish or a brushed finish), it will look something like this:

 

charred-board-gator-to-brushed

Scrap board showing gator and brushed finish after oiling.

 

 

charred-w-gator-finish

Close-up of gator finish after oiling.

 

 

charred-w-brushed-finish

Close-up of brushed finish after oiling (cloudy day). In sunlight, the red tones of the cedar become more pronounced.

 

There are companies in the US that are exploring the limits of what can be done with shou sugi ban, including the use of various species of wood, a range of options in the level of char, and potential areas for its installation:

Delta Millworks (Texas)

reSAWN TIMBER co. (Pennsylvania)

 

charred-cedar-small-pile

The beginnings of our stack, using 1×2’s to give the wood support and plenty of space for air circulation (this becomes more important after we apply the oil finish).

 

Either way, the char doesn’t go very deep into the wood, and it doesn’t have to in order to be effective — either for looks or durability.

For instance, once the wood has been charred, it will be fire resistant. The charred surface actually protects the wood from further burning. I had to see this to believe it, but if you char a piece and then hold the torch in one spot it really does resist burning (you can eventually reduce the wood to ash, but it takes a surprisingly long time).

The charred wood will also be unappetizing to insects or rodents, and once covered in its attractive black armor, the surface can face decades of sun and rain (80-100 years is the usual claim for its longevity) with little or no maintenance, apart from an occasional fresh coat of oil (every 15 years or so?).

Our wall assembly will utilize a fairly substantial rain screen, meaning there will be significant air movement behind the siding, so one could argue it should be unnecessary to char the back of each piece, but we’ve chosen to do so for the added peace of mind (and not a really significant amount of additional time — and the charring is fun to do anyway).

For cut ends and mitered joints, we will use tung oil to help seal these areas (similar to painted wood siding that gets a swipe of oil based primer in these same spots just before installation).

 

charred-cedar-small-pile-low-angle

Most of the siding will be 1×6 tongue and groove. The remaining 1x material will be for areas of trim.

 

Once charred, the wood can immediately be installed, or, as we’ve chosen to do, you can oil it first. After experimenting a little back in 2015, applying an oil finish seems to bind the char to the wood better than leaving it just “as is” (regardless if the level of char is light or heavy).

Also, if you don’t oil, then the surface remains like a charcoal briquet, so any time it’s touched some of the char will rub off — just imagine the reaction of friends or family the first time someone leans against the siding, or if you have kids running around and they touch the char. It could be a real mess.

In addition, if you choose not to oil, then every time the charred wood is cut during installation black dust will go flying (whoever does the installation will not be pleased when their hands, bodies, and lungs are covered in a layer of fine soot — picture a 19th century Welsh coal miner).

So for durability, looks, and ease of installation, we’ve decided to take the extra step of oiling each piece as well (more about this process later).

 

 

Our stack of completed boards grows…

 

charred-cedar-texture-long-view-of-pile

The stack as the sun begins to set.

 

 

charred-cedar-close-up-gator-2

An alligator (or just ‘gator’) finish with the knots still showing through.

 

 

charred-cedar-close-up-%22gator%22

The charred wood, depending on the angle and level of light, can take on silvery tones (although, in our experience, this mostly goes away once the wood has been oiled — producing a uniformly black appearance).

 

 

charred-cedar-close-up-lighter-version

A board with a lighter char.

 

There is a range in the level of char we want to achieve. While most boards will have the gator finish, much lighter boards (a few even lighter than the one pictured above) will be part of the mix as well. We think this will make for a more interesting overall look, but it also takes the pressure off, slightly, if you have more than one person doing the charring (each person will have a slightly different definition of ‘gator’).

We’re also curious to see how the lighter boards will age with time: Will the lighter undertones of raw cedar turn gray and blend nicely with the char? Or will the natural color, peeking through the black surface, stick around longer than we think?

As far as the tools involved, the following have worked for us:

 

inferno-torch-full-shot

Found the Inferno torch on Amazon.com and at our local Home Depot.

 

 

inferno-close-up

So far, it’s been a real workhorse.

 

 

inferno-w-various-tank-sizes

The inferno will work with almost any size tank.

 

 

100-tank-from-tebons-gas

100 lb. tank from Tebon’s Gas Service in Niles, Illinois.

 

We were planning to use the typical 40 pound propane tank that’s used for grilling. Fortunately, my wife was smart enough to look around online for us, and she found these 100 lb. tanks instead.

These 100 lb. tanks have worked out great — no trips to a big box store for refills on the smaller tanks. And by buying the gas in bulk, they’ve also saved us some money as well.

 

100-tank-w-condensation-full-shot

 

You can follow the level of the tank by looking for condensation. The only down side to these larger tanks is once they hit this level, about 1/4 full, pressure drops significantly, so it takes twice as long to burn a board.

Here are some of the key connections involved:

 

hose-to-tank-connection

 

 

hose-to-hose-connection

10′ hose combined with 25′ extension hose.

 

 

hose-to-torch-connection-1

The long silver component is the throttle for the boost function.

 

The Inferno comes with a 10′ hose, which works okay, but we bought a 25′ extension hose on Amazon that definitely makes life easier by allowing you to get further away from the tank for a wider range of motion.

 

sealant-for-hose-connections

If you decide to use an extension hose, you’ll need this sealant to make proper, sealed connections. If you’re lucky, someone in tool repair at your local hardware store will do this for you.

 

In terms of safety, in addition to a pair of sunglasses or construction safety glasses, proper hearing protection is a must. If you’re doing just one or two boards, the noise level of the torch isn’t a big deal. However, if you plan to do dozens of boards at one time, we would definitely recommend some kind of hearing protection. The torch is undeniably loud (we’re lucky we have patient, forgiving neighbors).

Welding gloves have also been a real help. On windy days, the boards tend to stay lit longer, but it’s easy to just pat or rub out the small areas of flame with the welding gloves. And they’re a must for moving the boards around right after charring.

 

welding-gloves

We found these in our local Home Depot tool department.

 

We also keep a couple of 5 gallon buckets around, only partially filled, so it would be easy to toss it at someone who’s just burst into flames (let’s hope this never happens).

In addition, we have a 6′ step ladder set up as a station to hold the torch when not in use, and it’s a convenient spot to drape a garden hose with a nice spray nozzle, so it’s in easy reach if something should go wrong. We also occasionally spray down the concrete, hoping this discourages any stray embers from landing and then floating away to ignite something in the surrounding area.

To be honest, the only time I got myself in trouble was when the 100 lb. tank was 1/4 full and the pressure had dropped. Normally, we barely have gas running through the hose and coming out of the torch because the boost switch on the torch is so effective. Because of the pressure drop, I turned up more gas, hoping it would counteract the loss of pressure, but instead I just managed to catch my jeans on fire at the knee (momentarily, thanks to a handy 5 gallon bucket of water). I was extremely lucky, and lesson definitely learned.

Right as the sun is going down is the most exciting time to burn — the flame becomes vivid, and it’s really fun to watch as it dances across the surface of the board.

 

torch-evening-flame

 

 

charring-1x8-cedar-2

That left hole in the knee is the one that I managed to catch on fire — notice I’m keeping a safe distance from the flame.

 

 

lions-head-in-flames

Playing with fire: Do you see the lion’s head?

 

 

head-of-a-cardinal

Head of a cardinal?

 

Videos demonstrating the charring:

Video 1: Charring 1x Material

Video 2: Charring

 

 

The 1x material, whether 1×6 or 1×8, takes longer to burn since we found it impossible to get the face and the edge all in one pass. You can definitely pick up more of a rhythm with the 1×6 T&G boards. And we haven’t gone for a gator appearance on the back (smooth side) of each board, instead going for a lighter char, which also helps to speed things up for each board.

 

How much will all this cost?

How long will it take?

For our single story, just under 1700 sq. ft. house (outside dimensions), with an attached 2-car garage, these are how our numbers break down:

  • Time to burn (per board): about 1-2 minutes a side
  • In 6-8 hours, 40-80 boards is realistic (depends on level of char, and if it’s 1x or T&G)
  • Total time to burn all the boards we should need: ±80 hours
  • For torch, hearing protection, welding gloves, extension hose: $100-150
  • Per 100 lb. tank: $80-90 (8 total tanks to finish).
  • 1×2’s, or similar material, for stacking the completed boards: $100-200
  • #3 or better Cedar (1×6 T&G, 1×6, and 1×8): approx. $8-10,000

Keep in mind, this doesn’t include the time or expense required to oil each board (again, more on that later).

One final, additional challenge was getting quality boards.

Our first order of cedar, via a big box store, came from Mary’s River (they’ve either gone out of business, or their manufacturing plant burned down — depends on who you ask). Their rate of waste was about 10-15%, so not bad at all. It felt like I had to go looking for bad boards (board bends to the left or right at the end, U-shaped from the middle, broken or missing tongues/grooves, or cracked/split boards).

In subsequent orders, with a company called Tri-Pro, the rate of waste was about 40%. Luckily, the big box stores are okay with returns, nevertheless this gets frustrating.

And even with the big box stores themselves, there can be significant differences in quality from one location to another. Our first couple of orders were poorly packed and just wrong. Then, after going to a second location to order, in Long Grove, this showed up:

 

charred-cedar-neatly-packed-pallet

A neatly packed pallet — when you’ve dealt with a messy one, this is a thing of beauty.

 

 

charred-cedar-neatly-packed-pallet-broken-down

Deconstructing the pallet. The plywood really makes a difference in protecting the wood.

 

 

pallet-from-menards-paperwork

“We are proud of this pallet”… and it clearly shows. Thank you!

 

I can’t tell you whether the person (or persons) who put this specific pallet together actually enjoys their job, but what I know for sure is that they give a shit (to be perfectly blunt).

Unfortunately, this level of quality and pride in workmanship is exceedingly rare — anywhere, in any occupation — so when you see it, it can’t help but stand out and grab your attention.

 

charred-cedar-putting-the-weasel-to-work

We even got the Beast involved — pulling labels, tags, and staples.

Starting Over…

0

Basic design elements for our new house:

 

 

Wood (including Charred Cedar)

Some really helpful videos that gave me the confidence to try this:

 

 

 

 

 

 

 

 

 

charred cedar samples on driveway

Some charred cedar boards I did last summer. The first two on the left have an “alligator” finish; the three on the right have been “brushed”, allowing more of the red in the wood to show through after much of the char has been removed.

 

 

charred cedar sample board with natural

A sample board showing the charred cedar in combination with “natural” oiled cedar. Still working on the exact layout and combination of the charred and “natural” boards. We will want to try something more adventurous than the basic layout you see here.

 

The charring is surprisingly easy to do with a little practice. If, however, you’re not up for it, but you’d still like to use it on your own house, here are some companies that will do it for you:

deltamillworks.com  (featured in the Risinger video above)

charredwood.com

resawntimberco.com  (they have a lot of cool options — even flooring!)

 

realmilkpaint.com

 

realmilkpaint.com

I use their Tung Oil and Citrus Solvent products to finish the cedar, and it works great on concrete or stone, especially when going for an “aged” effect. We’re also going to use it for finishing our wood floors — produces a fairly durable, easy to touch-up, slightly amber matte finish. It is also very easy to work with.

 

 

Concrete

buddyrhodes.com

buddyrhodes.com

 

I really like their Craftsman mix — great for decorative pieces, easy to work with, and it produces really great results (and it’s easy to add glass or pigment to the mix as well). Their Bone Paste slurry mix is also fun to use, and great for creating dramatic highlights when filling voids.

homemade-modern.com (they have interesting projects, with easy to follow instructions)

 

 

Concrete is usually thought of as oppressive and ugly, but there’s actually a lot of interesting ways to use it that bring out its potential as a decorative element.

 

 

Below is a concrete piece using Buddy Rhodes with real coffee beans embedded in the concrete (the beans were on the bottom of the form before pouring the concrete over them). I used the Dark Tung oil product from realmilkpaint.com to give it an added “aged” effect:

 

coffee bean concrete mold

 

 

Metal

ALIVE rust blog photo

I’ve learned how to prematurely rust bare steel, so some key spots will have this.

 

 

charred bench leg idea

There will also be metal hardware involved.

 

 

charred bench side view of legs

Unfinished charred bench from last summer.

 

 

towel bar idea

We will be using gas pipe for shelving and storage elements.

 

We’re going for an Urban Rustic look and feel, so there will be some factory/farm tools, with a variety of similar objects around as well — either partly reconditioned, like below, or re-contextualized in some fun way:

 

rusty red wheel